Finding the Fourth Proportional to 161,533.44, 242,403.84 and 78,382.08
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Solution
The fourth proportional to 161,533.44, 242,403.84 and 78,382.08 is: 117,623.43
Step by Step Solution
- Step 1: Write the proportion equation
161,533.44 : 242,403.84 = 78,382.08 : x - Step 2: Convert to fraction form
161,533.44/242,403.84 = 78,382.08/x - Step 3: Cross multiply
161,533.44x = 242,403.84 × 78,382.08 - Step 4: Simplify right side
161,533.44x = 19,000,117,179.19 - Step 5: Solve for x
x = 19,000,117,179.19/161,533.44 - Step 6: Final answer
x = 117,623.43
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.